How Often Should You Empty a Grey Water Tank

You should empty your RV’s gray water tank when it is 2/3 full or more. If you’re traveling alone or with one other person, you might empty the tank every five to seven days.

How often do you dump grey water tank?

Wait until the holding tank is at least two-thirds full before flushing. If possible, don’t dump more than once every few days to a week—longer intervals mean more time to break down solids.

Can you empty grey water on the ground?

Generally, as long as your gray tank contains water that was used for washing, it’s legal to dump it on the ground.